Is playing dice without money permissible or forbidden? And is it permissible to delay making up a day in Ramadan for someone who masturbated during the day?

Playing with dice is absolutely forbidden, whether for money or not. As for someone who masturbated during the day in Ramadan, repentance and making up the fast are required if ejaculation occurred. The making up of the fast is delayed until after Ramadan, because the fast of Ramadan is a restricted obligation that does not allow for anything else.